Answer:
5600 feet
Step-by-step explanation:
If it is dropping 1400 every minute then to find the elevation at 4 minutes, you have to multiply 1400 with 4.
Answer:
-1
Step-by-step explanation:
9 and 12 have a common factor of 3 so 9/12 = 3/4
Answer:
D
Step-by-step explanation:
The expression is 
We can follow the rule of "PEMDAS" here.
PEMDAS = Parenthesis, Exponents, Multiply, Divide, Add, Subtract
So, we first need to deal with Parenthesis. Next,
There aren't any exponents, so we deal with Multiplication of 7 and 3.
Then addition/subtraction.
Hence, the first step, from the answer choices, would be D, multiply 7 and 3